crow-ell



(No Model.)

6 Sheets-Sheet 2. L..G. CROWELL. WEB PRINTING MACHINE.

Patented May 19, 1891.

(No Model.) 6 Sheets-Sheet 4.

L. G. GROW-ELL;

-WBB PRINTING MACHINE.

No. 452,693. Patented May 19, 1891.

Ina/72175?" (No Model.) e Sheetsl-Sheet 5.

. L; C. OROWELL.

- WEB PRINTING MACHINE. No. 452,693. Patented May 19, 1891.

(No Model.) 6 Sheets-Sheet 6..

L. G. GROWELL. WEB PRINTING MACHINE.

No. 452,693. v Patented May 19,1891.

IIIIIIIINI THE mnms PETERS cc., mom-mum, msum aaaaaaa c.

UNITED STATES LUTHER O. CROWELL, OF BROOKLYN,

PATENT OFFICE.

ASSIGNOR, BY DIREO" AND MESNE ASSIGNMENTS, TO ROBERT HOE, STEPHEN D. TUCKER, THEODORE H. MEAD, AND CHARLES TV. CARPENTER, OF NEXV YORK, N. Y.

WEB-PR INTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 452,693, dated May 19, 1891.

Application filed November 18, 1889. Serial No. 330,755. (No model.)

To aZZ' whom it 12mg concern:

Be it known that I, LUTHER O. ORowELL, a citizen of the United States, residing at Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Veb -Printing Machines, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

In the construction of web-printing machines, especially for the production of newspapers, it is frequently necessary to provide a press which may be used to print a single main web forming the body of the newspaper and for certain issues to print in addition thereto a supplement of equal or less size. It is desirable that machines of this character, especially in cases in which the supplement is to be printed but seldom, should be so constructed that the main web-printing mechanism may belocated in convenient position for change of plates and other purposes, and that the machine may be readily changed when the supplement is to be printed and run at a high rate of speed for either product.

It is the object of my invention to provide a simple and compact machine provided with a main web-printing mechanism and a supplement web printing mechanism so arranged that the main Web-printing mechanism shall be in convenient position for use when the supplement is not to be printed, and only'a change in the course of the web be necessary in shifting from one product to another, and I obtain this object in the present case by providing an auxiliary set of type and impression cylinders, which are used when the supplement is to be printed, and arranging one set of the main type and impression cylinders so as to be used either as a part of the main web-printing mechanism or as a part of the supplement-printing mechanism.

While the main obj cot of the invention and the principal use of the auxiliary cylinders are those stated above, these cylinders may be used with the main type and impression cylinders, thus afiordinga convenient means for printing one side of the web a second time in the same color or in a color different from that of the firstimpression. Such second im- 0 pression is frequently desirable, especially in display advertising, and the machine herein described affords a convenient means for this purpose, no change being necessary except in the course of the web. These auxiliary cylinders may be used asa part.- of the main webprinting mechanism also 'whenever, on account of breakage or for any other reason, it is not not desired to use the supplement printing-cylinders.

In the accompanying drawings, forming a part of this specification, Figure 1 is a side elevation of aweb-printing machine embodying my invention. Fig. 2 is a longitudinal sectional diagram taken inside the frame and showing the course of the main web when the supplement mechanism is not in use. Fig. 3 is a similar view showing the course of the main and supplement webs. Figs. 4 and 5 are similar views of a modified arrangement of cylinders, these figures showing, respectively, the course of the main Web when the supplement is not to be printed and the course of the main and supplement webs when both are used. Fig. 6 is a view looking to the left from type-cylinder 4 in Fig. 3. Fig. '7 is a partial plan showing the lead of the webs to the longitudinal folder.

Referring now to Figs. 1 to 3, A is the main and B the supplement Web. The main webprinting mechanism consists of the two sets of type and impression cylinders l 2 and 3 4, the type-cylinders being provided with inking mechanism of any ordinary form. As shown, the main web-cylinders are arranged parallel and in substantially the same hori- Zontal plane, and this is a convenient arrangement, as it affords ready access to the cylinders; but the cylinders may be arranged vertically or in any other relative positions Without departing from my invention. Arranged in position to form a part of the main printing mechanism when desired, and preferably below the cylinders l 2, as shown, are the auxiliary printing-cylinders 5 6, also provided with inking mechanism 7. If desired, these cylinders may be thrown out of operation when not in use by any suitable means.

I have shown for this purpose a removable gear 16, by which cylinder (5 is geared to tho impression-cylinder 2, the latter being driven from the main shaft 17 by a series of intermediates 18 and transmitting movement to the other members of the main web-printing mechanism, as usual in this class of machines. By removing the gear 16 the auxiliary printin g-eylinders and their inking mechanism are thrown out of operation.

Between the supplementweb l3 and the cylinders 3 l, and preferably below the latter, are the web-turner 8 and the conducting-rolls 9 10, forming with cylinders 3 4 a supplement printing and perfecting mechanism similar to that shown in my prior Letters Patent No. 212,444. The operation of this mechanism being well known need not be described here further than that the web passes under eonducting-roll 10 between the cylinders 3 and iat one end, where one side is printed, over roll 9 and the web-turner 8, by which the web is turned in the ordinary manner, returning over rolls 9 and 10 and between the other ends of cylinders 3 and 4, where the web is perfected. This supplement web-printing mechanism may be of any form and placed in any position in which the cylinders 3 l may be usedin combination therewith; but the mechanism and general arrangement shown involve the use of but few additional parts, and these are placed in a compact group conveniently for use.

The operation will 110w be described. Referring to Fig. 2, in which the supplement web B is shown as not in use, it will be seen that the main web A, as indicated in dotted lines, passes over the conducting-roll 11 upward between the type and impression-cylinders 1 2, where it is printed upon one side, thence over the impression-cylinder 2, under the impression-cyliuder 3, and upward between the latterand type-cylinder -l, by which it is perfected, and whence it is carried over the conducting-roll 12 or roll ll, as preferrcd, to the conducting rolls or pulleys 13, the longitudinal folder 15, and the delivery mechanism 0, all as is common in this class of mechanism. When the supplement is to be printed, the main web willbe led to the auxiliary cylinders 5 6 and the supplement web over turner 8 and to the cylinders 3 4. The course of the webs will be as indicated in dotted lines in Fig. 3. The main web passes downward between cylinders 5 and G, where it is printed upon one side, then around impression-cylinder 6, and upward between cylinders 1 and 2, by which it is perfected, and thence to the rolls 12 13 and the folder 15, as before. The supplement web B is printed and perfected by the cylinders 3 l, in combination with the turner, as before explained, and, as shown, passes from the cylind ersover conducting-roll l t to rolls orpulleys 13, where it is associated with the main web.

In web-printing, and especially in newspaper-work, in which large editions are to be struck off at the highest rate of speed, rendering frequent change of the tympan-sheet undesirable, it is usual, for the purpose of avoiding offset, to make the perfecting impression-cylinder of larger size than its typecylinder, in order that the successive impressions may not fall on the same part of the cylinder, or to provide this cylinder with special devices for this purpose. It is desirable, therefore, that the machine embodying the present invention should be so constructed that the perfecting-cylinders shall remain the same when the course of the main web is changed for printing the supplement, and such an arrangement of cylinders is shown in Figs. at and 5. In these figures the parts correspond generally to those of similar lettering in Figs. 1 to 3, cylinders 1 2 and 3 1 forming the main web-printing mechanism, cylinders 3 and 4- being used for printing the supplement and cylinders 5 andU being the auxiliarycylinders. The relative arrangement of the main cylinders is changed, however, so that the large impression-cylinder 2 is always one of the perfecting-cylinders in the modified construction, instead of being the first impression-cylinder when one web is used, as in Figs. 4 and 5.

As shown in Fig. 4, the course-of the main web when used alone is from the web-roll under conducting-roll 11, upward between cylinders 3 and l, around large impression-cylinder 2, and between it and type-eylinder 1 to the conducting-rolls 12 13 and folder 15, cylinder 2 thus forming the perfecting impression-cylinder. When the supplement is to be printed, the position of the main web is changed and the supplement-web substitutedfor it, as shown in Fig. 5. The course of the main web is then upward over conductingrolls 11, downward between cylinders 5 6, over large impression-cylinder 2, and between itand type-cylinder 1, as before, cylinder 2 thus forming the impression-cylinder for the main web in both cases. The course of the supplement-web, as shown, is substantially the same as in Fig. 3.

For printing one side of the web a second time in a different color, as above described, the course of the web will be as follows, the supplement-web not being used: In the construction shown in Figs. 1 to 3 the web will first be led over conducting-roll 11 and downward between auxiliary cylinders 5 6 to receive the first impression, thence around cylinder 6 and onward, as shown in dotted lines in Fig. 1, the web being perfected by cylinders 1 2, and one side being printed a second time by cylinders 3 4 in a color different from the first impression.

In the construction shown in Fig. 5 the web B is not used, and the web A is led, as shown in dotted lines, till it has been perfected by cylinders 1 2, when, instead of passing to the folder, it is led around cylinder 2, downward around cylinder 3, and then upward between the latter and type-cylinder 4, by which the IIO second impression in a different color is made, the web passing thence to the folder, as in the case of the supplement web.

The course of the webs after leaving the printing-cylinders is immaterial in all cases so far as my invention is concerned, and any conducting, associating, and delivery mechanism may be used.

It will be understood that, if desired, the cylinders 1 2 and 3 at may be used in combination with the turner without using the auxiliary cylinders 5 6, the product being a sheet printed on one side and a perfected sheet. Other means of varying the product will readily suggest themselves.

The main and supplemental mechanism may be arranged for any width of sheet, the relative length of the cylinders or number of plates used being varied in accordance with the product desired.

My invention is not to be limited to any special form of main printing mechanism or supplement-printing mechanism, but, as will be seen, consists in the general combination and arrangement of the printing mechanisms, as described'and claimed.

\Vhat I claim is- 1. In a web-printing machine, the combination of two sets of type and impression cylinders forming a web printing and perfecting mechanism, and an auxiliary set of type and impression cylinders coacting with either of the other sets of cylinders to print and perfeet a web, substantially as described.

2. In a web-printing machine, the combination of two sets of type and impression 7 cylinders forming a web printing and perfecting mechanism, an auxiliary set of type and impression cylinders coacting with one of the two sets of cylinders to print and perfect a web, and mechanism coacting with the other of the two sets of cylinders to print and perfect a supplement-web, substantially as described.

3. A web-printing machine consisting, essentially, of two sets of type and impression cylinders forming a web printing and perfecting mechanism, and a web-turner coacting with one of the sets of cylinders to print a supplement, substantially as described.

4. A web-printing machine consisting, essentially, of two sets of type and impression cylinders coacting to print and perfect a web of full width, and a web-turner coacting with one of said sets of cylinders to print and perfect a web of less than full width, substantially as described.

5. A web-printing machine consisting, essentially, of two sets of type and impression cylinders forming a web printing and perfecting mechanism, a web-turner coacting with one of said sets of type and impression cylinders to print a supplement, and an auxiliary set of type andimpression cylinders coacting with the other set of type and impression cylinders when the supplement is to be printed, substantially as described.

6. A web-printing machine consisting, essentially, of three sets of type and impression cylinders, one of said sets of type and impression cylinders coacting as perfectingcylinders with either of the other sets of cylinders, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

LUTHER O. OROWELL.

'Witnesses:

GEo. H. Borrs, J. J. KENNEDY. 

